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GB1529034A - Surface acoustic wave devices - Google Patents

Surface acoustic wave devices

Info

Publication number
GB1529034A
GB1529034A GB778677A GB778677A GB1529034A GB 1529034 A GB1529034 A GB 1529034A GB 778677 A GB778677 A GB 778677A GB 778677 A GB778677 A GB 778677A GB 1529034 A GB1529034 A GB 1529034A
Authority
GB
United Kingdom
Prior art keywords
layer
acoustic wave
surface acoustic
slice
wave devices
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB778677A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Priority to GB778677A priority Critical patent/GB1529034A/en
Priority to DE19782805413 priority patent/DE2805413C2/en
Publication of GB1529034A publication Critical patent/GB1529034A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02543—Characteristics of substrate, e.g. cutting angles
    • H03H9/02574—Characteristics of substrate, e.g. cutting angles of combined substrates, multilayered substrates, piezoelectrical layers on not-piezoelectrical substrate
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves
    • H03H9/02622—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the surface, including back surface
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02866—Means for compensation or elimination of undesirable effects of bulk wave excitation and reflections

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Oscillators With Electromechanical Resonators (AREA)

Abstract

1529034 Surface wave delay lines STANDARD TELEPHONES & CABLES Ltd 24 Feb 1977 07786/77 Heading H3U A surface acoutic wave device used as a delay line comprises a layer of piezo-electric material 1 with input and output transducers 2, 3 on an upper surface and bonded at its lower surface to a metallized layer 5 covering the top layer of a second piezoelectric material slice 4 which has a further metallized layer 6 on its lower surface. The layers are preferably quartz 1 and lithium niobate 4 and by the application of a voltage across the slice 4 the structure can be made to flex and thus alter the spacing between the conductors of the transducer and thus the operating frequency of the device.
GB778677A 1977-02-24 1977-02-24 Surface acoustic wave devices Expired GB1529034A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB778677A GB1529034A (en) 1977-02-24 1977-02-24 Surface acoustic wave devices
DE19782805413 DE2805413C2 (en) 1977-02-24 1978-02-09 Arrangement based on surface acoustic waves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB778677A GB1529034A (en) 1977-02-24 1977-02-24 Surface acoustic wave devices

Publications (1)

Publication Number Publication Date
GB1529034A true GB1529034A (en) 1978-10-18

Family

ID=9839705

Family Applications (1)

Application Number Title Priority Date Filing Date
GB778677A Expired GB1529034A (en) 1977-02-24 1977-02-24 Surface acoustic wave devices

Country Status (2)

Country Link
DE (1) DE2805413C2 (en)
GB (1) GB1529034A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126035A (en) * 1982-07-06 1984-03-14 Clarion Co Ltd Surface acoustic wave device
RU2260902C2 (en) * 2003-03-05 2005-09-20 Федеральное государственное унитарное предприятие Омский научно-исследовательский институт приборостроения Method for raising temperature stability of narrow-bans surface acoustic-wave device
RU2284649C2 (en) * 2004-12-21 2006-09-27 Федеральное государственное унитарное предприятие Омский научно-исследовательский институт приборостроения Thermo-stable filter on surface acoustic waves
RU2336629C2 (en) * 2006-10-10 2008-10-20 Федеральное государственное унитарное предприятие Омский научно-исследовательский институт приборостроения Method of narrow-temperature mode activity deterioration prevention in double-mode quartz resonators with piezo elements of flat-convex and convex-convex profile

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2126035A (en) * 1982-07-06 1984-03-14 Clarion Co Ltd Surface acoustic wave device
RU2260902C2 (en) * 2003-03-05 2005-09-20 Федеральное государственное унитарное предприятие Омский научно-исследовательский институт приборостроения Method for raising temperature stability of narrow-bans surface acoustic-wave device
RU2284649C2 (en) * 2004-12-21 2006-09-27 Федеральное государственное унитарное предприятие Омский научно-исследовательский институт приборостроения Thermo-stable filter on surface acoustic waves
RU2336629C2 (en) * 2006-10-10 2008-10-20 Федеральное государственное унитарное предприятие Омский научно-исследовательский институт приборостроения Method of narrow-temperature mode activity deterioration prevention in double-mode quartz resonators with piezo elements of flat-convex and convex-convex profile

Also Published As

Publication number Publication date
DE2805413C2 (en) 1984-01-12
DE2805413A1 (en) 1978-08-31

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee